What Causes Pain During Urination During Menstruation?

I woke up Thursday morning and had started my period and also was experiencing extreme pain when I peed. I started taking AZO, but it could only do so much. It s Sunday and I went to the doctor and was told I have a UTI-Turned-Bladder Infection. She prescribed antibiotic and sent me home. Since being home, my lymph nodes in my groin area have become swollen and tender, and I noticed one ulcer near the opening of my vagina. I m freaking out, because I ve never been tested for any type of STD and I know those are symptoms, but I was wondering if it could be caused from my body fighting off the infection, or possibly turning into a kidney infection? Please let me know what you think, my anxiety is keeping me awake.